[PATCH] dt-bindings: mailbox: arm,mhu: Make secure interrupt optional

[Rob Herring]

The secure interrupt is only useful to secure world, therefore for NS
users it shouldn't be required. Make it optional.

This fixes a warning on Arm Juno board:

mhu@2b1f0000: interrupts: [[0, 36, 4], [0, 35, 4]] is too short

Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
---
 Documentation/devicetree/bindings/mailbox/arm,mhu.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/mailbox/arm,mhu.yaml b/Documentation/devicetree/bindings/mailbox/arm,mhu.yaml
index bd49c201477d..d9a4f4a02d7c 100644
--- a/Documentation/devicetree/bindings/mailbox/arm,mhu.yaml
+++ b/Documentation/devicetree/bindings/mailbox/arm,mhu.yaml
@@ -57,6 +57,7 @@ properties:
     maxItems: 1
 
   interrupts:
+    minItems: 2
     items:
       - description: low-priority non-secure
       - description: high-priority non-secure
-- 
2.34.1